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[小盆儿 <zhaopeng1988@xxxxxxxxx>]

hey guys~

I just shutoff one of my instance .
but when I try to start it ,I got the errors like below:

2012-12-31 16:31:12 ERROR nova.openstack.common.rpc.amqp [-] Exception
during message handling
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp Traceback (most
recent call last):
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/openstack/common/rpc/amqp.py", line
275, in _process_data
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp     rval =
self.proxy.dispatch(ctxt, version, method, **args)
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/openstack/common/rpc/dispatcher.py",
line 145, in dispatch
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp     return
getattr(proxyobj, method)(ctxt, **kwargs)
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/exception.py", line 117, in wrapped
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp     temp_level,
payload)
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp   File
"/usr/lib/python2.7/contextlib.py", line 24, in __exit__
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp     self.gen.next()
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/exception.py", line 92, in wrapped
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp     return
f(*args, **kw)
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 181, in
decorated_function
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp     pass
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp   File
"/usr/lib/python2.7/contextlib.py", line 24, in __exit__
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp     self.gen.next()
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 167, in
decorated_function
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp     return
function(self, context, *args, **kwargs)
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 202, in
decorated_function
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp
kwargs['instance']['uuid'], e, sys.exc_info())
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp   File
"/usr/lib/python2.7/contextlib.py", line 24, in __exit__
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp     self.gen.next()
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 196, in
decorated_function
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp     return
function(self, context, *args, **kwargs)
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 953, in
start_instance
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp
self.power_on_instance(context, instance)
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/exception.py", line 117, in wrapped
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp     temp_level,
payload)
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp   File
"/usr/lib/python2.7/contextlib.py", line 24, in __exit__
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp     self.gen.next()
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/exception.py", line 92, in wrapped
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp     return
f(*args, **kw)
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 181, in
decorated_function
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp     pass
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp   File
"/usr/lib/python2.7/contextlib.py", line 24, in __exit__
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp     self.gen.next()
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 167, in
decorated_function
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp     return
function(self, context, *args, **kwargs)
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp   File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 202, in
decorated_function
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp
kwargs['instance']['uuid'], e, sys.exc_info())
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp KeyError:
'instance'
2012-12-31 16:31:12 TRACE nova.openstack.common.rpc.amqp

how can I fix this error?
and how to find what config cause these errors ?